William heney feaziee



(No Model.) I

W. H. PRAZIER.

SAW MILL DOG. N0. 330,309. Pate'ntedNgvl 10, 1885.

w I Pa 1 I (h ll g n .lln 1 L ml I UNITED STATES PATENT FFICE.

WVILLIAM HENRY FRAZIER, OF OSWEGO, NEW YORK.

SAW-MILL DOG.

SPECIFICATION forming part of Letters Patent No. 330,309, dated November 10, 1885. Application filed September 2,1885. Serial No. 175,915. (No model.)

To aZZ whom it may concern;

Be it known that I, WILLIAM H. FRAZIER, a citizen of the United States, and a resident of Oswego, in the county of Oswego and State of New York, have invented certain new and useful Improvements in Devices for Holding Logs upon Saw-Mill Carriages; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to made and use the same, reference being had to the accompanying drawings, which form a part of this specification, and in which- Figure l is a perspective view of my improved dog for holding logs upon a saw-mill carriage, showing it applied to the carriage. Fig. 2 is a side View of the same with one side removed. Fig. 3 is a similar view of the other side, showing the side plate removed, and Fig. 4 is a side view of the dog, showing it holding a log, the log being shown in section.

Similar letters of reference indicate corresponding parts in all the figures.

My invention has relation to dogs for holding logs upon the carriages of saw-mills; and it consists in the improved construction and combination of parts of a dog which will need no adjustment for holding logs of different dimensions, as hereinafter more fully described and claimed.

In the accompanying drawings the letters A and B indicate the upright side plates of the dog, which plates are secured in an upright position upon the sliding portion 0 of the log-carriage D. The upper end of one of the plates of side pieces is provided with a rearwardly-projecting plate or lip, E, upon a which is pivoted an eccentric disk, F, having a handle or lever, G. The side plates are secured a distance from each other, and the space between their faces is divided into two vertical slots, H and I, by means of a partition bar or plate, J, which is secured to the side plates at their upper and lower ends Where blocks Kspace the three plates or bars.

An eccentric strap, L, is secured upon the eccentric disk and has a rod, M, extending downward, which rod is pivoted at its lower end to a bar, N, the upper end of which is correspondingly-inclined ends of the plate slide, and the said plate has furthermore a number of slots, J, inclined parallel with the ends of the plate, with which slots the plate slides upon transverse rollers K, secured to the outer side plate and to the partition-plate. The forward edge of this obliquely-sliding plate is provided with a number of downwardly inclined teeth or dogs, L,which teeth or dogs may either be integral with the plate or inserted into and secured to the outer edge of the plate.

A number of dogs, M, having upwardlybent curved points N and bent at a right angle, are pivoted at their elbows upon bolts 0 passing through the side plate into the par .tition-plate, and the outer ends of the dogs havelongitudinal slots P, in which slidebolts Q, secured in a bar, R, and-into the sliding bar N.

It will now be seen that when the lever upon the eccentric disk is tilted downward the main bar N will be forced down and the teeth upon the obliquely-sliding plate he forced downward,while the curved points of the dogs will be forced upward, so that the side of a log resting against the upright bars will be grasped at several places by the downwardlypointing teeth and upwardly-pointing dogs, which will enter the log and hold it firmly, there being a number of teeth entering the log at a vertical line.

The entire forward edge or side of the upright formed by the vertical bars havingteeth or dogs, a log of any size will be grasped by the said teeth and dogs, doing away with the necessity of adjusting the dogs to the thickness of the log. .7

It is a natural consequence of this device, having a number of teeth or dogs and the usual construction of the device having only two dogs, that this device will have a firmer hold upon the log, and thus avoid any possibility of the log slipping from the'dogs and the consequent ruining of a board or plank.

Having thus described myinvention, I claim and desire to secure by Letters Patent of the United States In a device for holding logs upon saw-mill carriages, the combination of two upright side plates and apartition-plate, forming two ver tical slots, one of which is formed with forwardly and downwardly inclined end pieces, a plate having downwardly inclined teeth upon its forward edge and sliding with its in clined ends upon the inclined end pieces of the slot, and having forwardly and down-' wardly inclined slots sliding upon bolts traversing the vertical slot, a bar secured to the rear edge of the slotted plate and having bolts projecting from its side securing a bar to it a distance from it, elbow-shaped dogs pivoted in the other vertical slot between one side plate and the partition-plate at their bends and having upwardly-curved points at their forward ends and longitudinal slots at their rear ends in which slide the bolts upon the vertical bar, and an eccentric diskpivoted upon a projecting lip of one of the side plates having a lever and a strap formed with a rod pivoted to the vertical bar as and for the purpose shown and set forth.

In testimony that I claim the foregoing as my own I have hereunto affixed my signature inpresence of two witnesses.

WILLIAM HENRY FRAZIER. Witnesses:

LEON F. HALL, J-AMEs BERLINGUETTE. 

